Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Voltage-measuring device with four measuring panels

A technology of voltage measurement and measurement panel, which is applied in the direction of AC/DC potential difference measurement devices, etc., and can solve the problems of no standard resistance, small resistance value, trouble, etc.

Inactive Publication Date: 2010-07-14
FUYANG PRECISE INSTR CO
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]Because the third and fourth step discs have auxiliary discs, the layers of switches of the third and fourth step discs are increased, thereby increasing the instrument’s The volume also complicates the structure of the switch and the instrument, especially if the measurement data of the third and fourth step discs are found to be out of tolerance during the instrument verification process, it is very important to correct the inner layer resistance of the third and fourth step disc switches. troublesome
Application No. 200820120442.4 is more advanced than ZL200510062375.1, but the current of the two voltage measuring devices flows through the brush of the first stepping disc, and then divides into two paths, passes through each stepping disc, and converges at the first stepping disc. The measuring disc brush of the disc; the problem it brings is that the resistance values ​​of the second, third and fourth discs are composed of two identical numbers, and the resistance value is small, and there is no standard resistance to compare; if the transition standard resistance is used , then the lead error between the two transition standard resistors is difficult to handle; therefore, the resistance values ​​of the second, third and fourth discs of the voltage measuring device are difficult to make accurate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Voltage-measuring device with four measuring panels
  • Voltage-measuring device with four measuring panels
  • Voltage-measuring device with four measuring panels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1: In figure 1 Among them, the four stepping disks are composed of measuring disks and replacement disks with the same quantity and resistance value. The measuring disk in each stepping disk increases the resistance, and the replacement disk reduces the resistance of the same resistance value, and vice versa. Therefore, Regardless of the indication value of the stepper panel, the resistance values ​​on the left and right sides between nodes A and B remain unchanged.

[0045] The current is divided into two paths between the contact contacted by the second II'substitution disc brush and the contact contact of the second measurement disc brush, and one path passes through the 2000Ω resistance R 2 , the other way passes through the first stepping disc, the resistance passing through the first stepping disc is: 1900Ω+100Ω=2000Ω, which is related to the resistance R 2 equal, when the resistor R 2 The current on the first step disc is also equal to the current on th...

Embodiment 2

[0059] Example 2: In figure 2 Among them, the four stepping disks are composed of measuring disks and replacement disks with the same quantity and resistance value. The measuring disk in each stepping disk increases the resistance, and the replacement disk reduces the resistance of the same resistance value, and vice versa. Therefore, Regardless of the indication value of the stepper panel, the resistance values ​​on the left and right sides between nodes A and B remain unchanged.

[0060] The current is divided into two paths between the contact contacted by the second II'substitution disc brush and the contact contact of the second measurement disc brush, and one path passes through the 2000Ω resistance R 2 , the other way passes through the first stepping disc, the resistance passing through the first stepping disc is: 1900Ω+100Ω=2000Ω, which is related to the resistance R 2 equal, when the resistor R 2 The current on the first step disc is also equal to the current on t...

Embodiment 3

[0073] Example 3: In image 3 Among them, the four stepping disks are composed of measuring disks and replacement disks with the same quantity and resistance value. The measuring disk in each stepping disk increases the resistance, and the replacement disk reduces the resistance of the same resistance value, and vice versa. Therefore, Regardless of the indication value of the stepper panel, the resistance values ​​on the left and right sides between nodes A and B remain unchanged.

[0074] The current is divided into two paths between the contact contacted by the second II'substitution disc brush and the contact contact of the second measurement disc brush, and one path passes through the 2000Ω resistance R 2 , the other way passes through the first stepping disc, the resistance passing through the first stepping disc is: 1900Ω+100Ω=2000Ω, which is related to the resistance R 2 equal, when the resistor R 2 The current on the first step disc is also equal to the current on th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a voltage-measuring device with four measuring panels, which is used to measure direct-current voltage. The resistance of each resistor on the measuring panel and the substitute panel of each stepping panel is the integer power of 10, consequently, the manufacturing precision of instrument parts is increased, and the measuring accuracy of the whole voltage-measuring device is increased as well; the four measuring panels are directly connected together by wires without needing switches, and thereby the impact caused by switch contact resistance variation does not exist when the voltage-measuring device carries out measurement.

Description

technical field [0001] The invention relates to an instrument for measuring DC voltage. Background technique [0002] Invention patent ZL200510062375.1 was published on May 7, 2008. It is a voltage measuring device with four stepping discs. Its third and fourth stepping discs each have a measuring disc, a substituting disc and an auxiliary disc. Composition, the resistance value on the measuring disk and the replacement disk is the same, every time a resistance is added to the measuring disk, the replacement disk will reduce the same resistance, since the third step disk is not set at the 10th point, the fourth step disk is set The total resistance of the circuit changes when the indication value is different. When the third step dial is set at the 10th point, the total resistance of the circuit remains unchanged when the fourth step dial is set at different indication values. Therefore, the third step dial has a measuring dial. 1. In addition to the replacement disk, an au...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01R17/20
Inventor 骆小君程军
Owner FUYANG PRECISE INSTR CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com